I use the following safety equipment on my ebikes:
- Air Zounds 2 air-horn cost $11
- Emerson RP005 red-blinkies $4 at Boaters World (I use 3)
- Lightsman strobe light $11 at eBay
- Small ding-a-ling bell
- Bright clothing
- Helmet
- Crash vest similar to those used by BMX riders